7008 CE/HCP4AH1DGA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7008 CE/HCP4AH1DGA Bearing Product Overview & Core Advantages
The 7008 CE/HCP4AH1DGA is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. This universal matchable (SU) bearing is engineered to handle combined radial and axial loads simultaneously. Its key advantages include superior high-speed performance enabled by a phenolic cage and ceramic balls, and extra light preload (Class A) for minimal friction and precise operation. Manufactured to P4A tolerance class, it ensures outstanding dimensional stability and rotational accuracy in demanding environments.
Model Code Deep Explanation
| Code Segment | Technical Meaning |
|---|---|
| 7008 | Basic bearing series and size designation (40mm bore, 68mm OD, 30mm width) |
| C | 15° contact angle, optimized for high-speed applications with combined loads |
| E | Optimized internal design for enhanced performance and load capacity |
| HC | Hybrid Ceramic construction with ceramic balls and steel rings |
| P4A | High precision tolerance class exceeding ABEC 7 standards |
| H1 | Pre-set extra light preload (Class A) |
| DG | Universal matchable bearing design (SU arrangement) |
| A | Specific internal clearance and preload configuration |
7008 CE/HCP4AH1DGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces friction, heat generation, and wear. This enables higher limiting speeds (56,000 rpm) and extended service life compared to all-steel bearings.
Phenolic Resin Cage: The lightweight phenolic cage provides excellent dimensional stability at high speeds and temperatures, contributing to smooth operation and reduced vibration.
Universal Matchable Design (SU): This bearing is universally matchable in any combination (face-to-face, back-to-back, or tandem) without pre-load loss, offering exceptional flexibility in mounting configurations for optimal rigidity and load distribution.
Extra Light Preload (Class A): The factory-set preload ensures minimal starting and running torque, ideal for applications requiring high precision and rapid acceleration.
High Load Capacity: With a dynamic load rating of 4478 lbf and static load rating of 3442 lbf, this bearing reliably handles significant combined loads.
7008 CE/HCP4AH1DGA Bearing Typical Application Areas
- High-Speed Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling applications requiring extreme precision and speed.
- Precision Medical Equipment: Dental handpieces, surgical tools, and laboratory instrumentation.
- Aerospace & Defense Systems: Gyroscopes, navigation systems, and auxiliary power units.
- High-Frequency Motors and Spindles: Where low friction, high rigidity, and thermal stability are critical.
- Semiconductor Manufacturing Equipment: Wafer handling robots and precision positioning stages.
